Kurt von Ruffin (28 September 1901 – 17 November 1996) was a German actor and opera singer who was imprisoned by the Nazis for the crime of homosexuality.
He made his film debut in 1931 in Die Faschingsfee [de] and Walzerparadies, also starring in Harry Piel's Bobby geht los in the same year.
Von Ruffin says that SS guards touched prisoners and then beat those who got sexually aroused.
[1] After nine months in Lichtenburg, von Ruffin was released thanks to the intervention of prominent theatre director Heinz Hilpert, and his lawyers arranged for the destruction of his Gestapo file.
Von Ruffin went on to star in five more movies: Königswalzer (1935), Die Geige lockt (1935), Black Roses (1935), The Hour of Temptation (1936), and Du bist so schön, Berlinerin (1936) before he was finally prohibited from appearing in any more films.